i would like cancel my icloud mach acount
i would like u to cancel my i cloud mach accound
These are user-to-user forums, you are not talking to Apple here. There are instructions on the page that you posted from your turning off auto-renewal for iTunes Match.
If you are looking for a refund for your current subscription then you can try contacting iTunes support and see if they will refund or credit you : http://www.apple.com/support/itunes/contact/ - click on Contact iTunes Store Support on the right-hand side of the page, then Purchases, Billing & Redemption